Project 6: Build a Bridge, Break a Bridge! Due: Feb 14th

Project

You will be building a bridge using only foam core, and white glue. Your goal is to build a bridge that can bear as much weight as possible. Try to achieve a balance of strength, and beauty, in the design of your bridge. During the final critique, your projects will be strength-tested. Each bridge must hold a minimum of 50 lbs. The student whose bridge can hold the most weight will win a prize. 

Specs

Materials- You may only use the foam core provided in class. You may only use white glue (Elmer's glue). You man not use hot glue, epoxy, or tape. 

Length and Span- Your bridge must be able to span an 18" (inch) gap. Note: The span is the part of the bridge that is not supported by anything beneath it (like the table, leg, or chair). Keep in mind that there will need to be additional length in order for the ends of the bridge to rest on the table top. Therefore, the bridge has to be longer than 18" (inches).

Width and Height- The bridge must have a minimum height of 8" (inches), and a minimum width of 8" (inches). Lastly, there must be a flat area on the top of the bridge where we can stack bags of clay for the strength test. The bags are approximately 6" (inches) wide. 

Rubric

You will be assessed on the strength of your bridge, craftsmanship, and it's aesthetic qualities. 

Schedule

Jan 24

You will be given a small sheet of foam core in class.  For homework, do an experiment to see what kind of strong structures you can make. Research designs on the internet and come up with DRAW bridge plans that you think would be strong. Bring your experiments and drawings to class on the 31th.

Jan 31

Come to class with white glue and a sharp knife & your drawings and experiments. This will be a studio day.

Feb 14

Final Critique and Bridge Break! 

Examples

Below is a video of the critique from two years ago. Pay attention to both the designs of the bridges, and the set-up of the tables.  This will help you in designing your bridge appropriately. Note: the pieces of wood screwed to the side of the table extend down 1' (foot). You may have part of your bridge rest against this surface to help distribute stress/weight. 

Each of these bridges held 100 lbs!

Previous Year's Projects